System and method for processing signals from intracardiac catheters

Abstract

A system for recording intracardiac signals and for providing stimulation pulses and / or ablation energy at intracardiac locations. The system includes intracardiac terminals adapted to collecting intracardiac electrophysiological potentials from respective intracardiac locations in an individual; an indifferent terminal adapted to collecting indifferent electro-physiological potentials from the individual; a differential amplifier stage adapted to receiving and amplifying the electrophysiological potentials collected from the intra-cardiac and indifferent terminals with respect to a signal reference to obtain respective intracardiac and indifferent signals; a processor device adapted to determining a common mode signal as an average of the intracardiac and indifferent signals and adapted to providing an output of intracardiac data based at least on the intracardiac signals, wherein the intracardiac signals are referenced with respect to the common mode signal. A method of processing intracardiac electrophysiological signals is also disclosed.

Description

[0001]The present invention relates in one aspect to a system for recording intracardiac signals, and in particular to a system for recording intracardiac signals representing electrophysiological potentials from a plurality of electrodes at respective intracardiac locations. In a further aspect, the invention relates to a method for processing intracardiac signals, in particular a method for processing intracardiac signals representing electrophysiological potentials probed by a plurality of electrodes at respective intracardiac locations. In yet a further aspect, the present invention relates to a system for performing intracardiac procedures including steps of recording intracardiac signals and steps of applying stimulus and / or ablation energy at intracardiac locations.BACKGROUND OF THE INVENTION[0002]Intracardiac electrophysiological measurements are considered an important tool for understanding and treating cardiac problems, such as arrhythmia phenomena. Intracardiac measureme...

AI Technical Summary

Benefits of technology

The patent text describes a system for recording intracardiac signals. By separating the common mode signal from the differential mode signals, the system effectively suppresses interference and reduces noise. The use of an amplifier stage with high filtering capabilities is particularly effective in reducing noise. The system also includes filtering means that allow for flexible and adaptive filtering tailored to specific needs and environments. The filtering means may use noise frequency tracking or adaptive filtering techniques. The resulting intracardiac output data is cleaner, more accurate, and reliable for analysis and interpretation.

Problems solved by technology

Despite a remarkable noise reduction, differential mode signals may therefore in many practical applications be inexpedient for the subsequent interpretation of the obtained intracardiac data, e.g. with respect to the propagation of an activation signal through a particular electrophysiological region within the heart.

The signal reference is thus affected by the actual locations of the intracardiac electrodes within the intracardiac region to be studied and may be difficult to relate to a well-defined electrophysiological reference.

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